I want to use my standard-size Shapeoko to cut out a zero-clearance insert for my table saw. I am doing the design (or at least attempting to) in Fusion 360.
My challenge is around the dimensions of the insert–it’s a big one at about 16.25" long. Obviously, that won’t work cutting it straight left-right or up-down on the 16"x16" Shapeoko. However, if I can hold my stock at a 45 degree angle, then I have a lot more room to cut. The design in Fusion360 looks like this:
Now, I am not using a completely square piece of stock, despite what the graphic shows. To avoid a lot of waste, I cut a rectangular piece of MDF a little wider and a little longer than I actually need it to be. My zero point in my first attempt was in the lower left. Setting the zero is a bit challenging since edge of the stock isn’t really parallel to either side of the waste board–it’s at an angle (hopefully you can visualize this) and the zero point is over “air” not over the stock. On my first attempt I was just a bit off and the radius at far end of the insert got cut off “flat” rather than being the full curve you see.
My question is whether the center of the stock can be set up in Fusion360 as the “zero point” in terms of the g-code generated. I was hoping I could determine the center of the stock, and zero my Shapeoko at that point. This would ensure that I didn’t have the piece slightly mis-oriented where I would be “machining air” by accident.
In Fusion 360, I see a place in the machine setup where I can set the WCS and I have managed to move origin to the center of the stock. However, I have no confidence that the generated g-code will actually work from the middle of the stock. A quick look in ncviewer when I tried this appeared like the tool was still coming from the lower-left point.
Is having the center of the stock as the zero point even possible in Fusion 360 and Shapeoko?
Obviously, the right solution is to get a larger Shapeoko so one doesn’t have to try this sort of workaround, but there are budget and shop space constraints.
I appreciate any insight and wisdom.